Social Mechanisms
https://www.ssoar.info/ssoar/handle/document/18211
http://link.springer.com/content/pdf/10.1007%2Fs11614-010-0076-6.pdf#
http://pub.uni-bielefeld.de/publication/2289820
http://www.soc.cornell.edu/faculty/swedberg/1998%20Social%20Mechanisms.pdf
en:Mechanism (sociology)